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// BEGIN_COPYRIGHT
//
// Copyright (C) 1999 Allen Akin All Rights Reserved.
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the
// Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
// KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ALLEN AKIN BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
// OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// END_COPYRIGHT
// stats.h: simple statistics-gathering utilities for glean
// These are rather simplistic. For more robust implementations, consider
// using Numerical Recipes.
#ifndef __stats_h__
#define __stats_h__
#include <vector>
#ifdef __WIN__
using namespace std;
#endif
#if defined( __WIN__ )
#undef min
#undef max
#endif
namespace GLEAN {
class BasicStats {
int _n;
double _min;
double _max;
double _sum;
double _sum2;
public:
void init();
inline int n() const {return _n;}
inline double min() const {return _min;}
inline double max() const {return _max;}
inline double sum() const {return _sum;}
inline double sum2() const {return _sum2;}
double mean() const;
double variance() const;
double deviation() const;
inline void sample(double d) {
++_n;
if (d < _min)
_min = d;
if (d > _max)
_max = d;
_sum += d;
_sum2 += d*d;
}
BasicStats() {init();}
template<class T> BasicStats(std::vector<T>& v) {
init();
for (typename std::vector<T>::const_iterator p = v.begin(); p < v.end(); ++p)
sample(*p);
}
}; // class BasicStats
} // namespace GLEAN
#endif // __stats_h__
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